GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/plat/rockchip/common/rockchip_sip_svc.c

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <common/debug.h>
+#include <common/runtime_svc.h>
+#include <lib/mmio.h>
+#include <tools_share/uuid.h>
+
+#include <plat_sip_calls.h>
+#include <rockchip_sip_svc.h>
+
+/* Rockchip SiP Service UUID */
+DEFINE_SVC_UUID2(rk_sip_svc_uid,
+	0xe2c76fe8, 0x3e31, 0xe611, 0xb7, 0x0d,
+	0x8f, 0x88, 0xee, 0x74, 0x7b, 0x72);
+
+#pragma weak rockchip_plat_sip_handler
+uintptr_t rockchip_plat_sip_handler(uint32_t smc_fid,
+				    u_register_t x1,
+				    u_register_t x2,
+				    u_register_t x3,
+				    u_register_t x4,
+				    void *cookie,
+				    void *handle,
+				    u_register_t flags)
+{
+	ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
+	SMC_RET1(handle, SMC_UNK);
+}
+
+/*
+ * This function is responsible for handling all SiP calls from the NS world
+ */
+uintptr_t sip_smc_handler(uint32_t smc_fid,
+			  u_register_t x1,
+			  u_register_t x2,
+			  u_register_t x3,
+			  u_register_t x4,
+			  void *cookie,
+			  void *handle,
+			  u_register_t flags)
+{
+	uint32_t ns;
+
+	/* Determine which security state this SMC originated from */
+	ns = is_caller_non_secure(flags);
+	if (!ns)
+		SMC_RET1(handle, SMC_UNK);
+
+	switch (smc_fid) {
+	case SIP_SVC_CALL_COUNT:
+		/* Return the number of Rockchip SiP Service Calls. */
+		SMC_RET1(handle,
+			 RK_COMMON_SIP_NUM_CALLS + RK_PLAT_SIP_NUM_CALLS);
+
+	case SIP_SVC_UID:
+		/* Return UID to the caller */
+		SMC_UUID_RET(handle, rk_sip_svc_uid);
+
+	case SIP_SVC_VERSION:
+		/* Return the version of current implementation */
+		SMC_RET2(handle, RK_SIP_SVC_VERSION_MAJOR,
+			RK_SIP_SVC_VERSION_MINOR);
+
+	default:
+		return rockchip_plat_sip_handler(smc_fid, x1, x2, x3, x4,
+			cookie, handle, flags);
+	}
+}
+
+/* Define a runtime service descriptor for fast SMC calls */
+DECLARE_RT_SVC(
+	rockchip_sip_svc,
+	OEN_SIP_START,
+	OEN_SIP_END,
+	SMC_TYPE_FAST,
+	NULL,
+	sip_smc_handler
+);